Creative origins
The drow, as they appear in fantasy fiction and games, were created by Gary Gygax, and appeared in the 1979 Advanced Dungeons & Dragons module, Hall of the Fire Giant King. They were first mentioned in the Dungeons & Dragons game in the 1st Edition 1977 Advanced Dungeons & Dragons Monster Manual under "Elf." They made their first statistical appearance in G3 Hall of the Fire Giant King (later G1-2-3 Against the Giants) (1978) by Gary Gygax. The story continued in modules D1 Descent into the Depths of the Earth, D2 Shrine of the Kuo-Toa, D3 Vault of the Drow, and Q1 Queen of the Demonweb Pits each of which expanded on drow culture. The first D&D manual that the drow appeared in was the original Fiend Folio.
Etymologically, "drow" is probably derived from the Shetland Isles Drow. Webster's Unabridged Dictionary (1970) states: "Drow, n., [scot.] A tiny elf which lived in caves and forged magical metal work." The word's origin is identical to the origin of the word "troll," which goes back further to the Scottish Gaelic word spelled "trow." The original Scottish Gaelic word is pronounced "dtrow" with a soft "dt" sound, and the original pronunciation sounds similar to "troll." The word is also found in Cornish and Welsh, with slight pronunciation differences. The race itself seems based on another dark elf, specifically the Dökkálfar of Norse mythology.